Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/literals.dart

-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-testString() {
-  print("a");
-}
-
-testInt() {
-  print(1);
-}
-
-testBool() {
-  print(true);
-  print(false);
-}
-
-testDouble() {
-  print(1.0);
-}
-
-testNull() {
-  print(null);
-}
-
-testList() {
-  print([]);
-  print(["a", "b"]);
-}
-
-testMap() {
-  print({});
-  print({"a": "b"});
-}
-
-testSymbol() {
-  print(#fisk);
-  print(#_fisk);
-  print(#fisk.hest.ko);
-}
-
-main() {
-  testString();
-  testInt();
-  testBool();
-  testDouble();
-  testNull();
-  testList();
-  testMap();
-  testSymbol();
-}